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. The composite containing low porosity shows excellent wear resistance, which is attributed to the presence of mechanically mixed layer on the worn surface. In this case, the dominant wear mechanism is oxidative... under high load, which results in a higher wear rate. Key words: copper matrix composites; pressureless infiltration; wear; porosity; mechanically mixed layer  ......
to the oxidative wear at room temperature, a mechanically mixed layer (MML) was formed to protect the surface of the samples. Under 80 N of load at room temperature, the milled Al5083.... Key words: tribological behavior; oxidative wear; mechanically mixed layer; wear rate; Hall-Petch theory 1 Introduction Over the past few decades, aluminum matrix composites (AMCs) reinforced......
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Preparation of anodic films on 2024 aluminum alloy in boric acid-containing mixed electrolyte MA Song-jiang(马淞江)1, LUO Peng(罗 鹏)2, ZHOU Hai-hui(周海晖)2, FU Chao-peng(付超鹏)2, KUANG Ya-fei(旷亚非)2 1...; Abstract: The anodizing oxidation process on 2024 aluminum alloy was researched in the mixed electrolyte with the composition of 30 g/L boric acid, 2 g/L......
of jarosite as a passivation layer on the mineral surface during bioleaching. In the bioleaching using the mixed culture, low pH is got from the sulfur oxidizing inhibiting, the formation of jarosite... layer on the mineral surface[5], which strongly inhibits ferric iron reduction followed by a subsequent reduction in the copper leaching rate. While in the mixed culture, the low pH value hinders......
J. Cent. South Univ. (2020) 27: 1373-1385 DOI: https://doi.org/10.1007/s11771-020-4373-3 Comparison of leaching of bornite from different regions mediated by mixed moderately thermophilic bacteria... diffraction (XRD) and scanning electron microscopy (SEM) were conducted to investigate three kinds of bornites from different regions leached by moderately thermophilic mixed bacteria of Leptospirillum......
], and it can permeate into the cell-wall and form a buffer layer between the cell wall and membrane. This layer could avoid inner cell to form ice crystal, and thus protect cells [20]. The mixed culture... J. Cent. South Univ. (2020) 27: 1386-1394 DOI: https://doi.org/10.1007/s11771-020-4374-2 Comparison of bioleaching of chalcopyrite concentrates with mixed culture after cryopreservation......
TEM microstructure of mechanically alloyed Ti-12Mg powders T. S. KIM1, B. T. LEE2, J. P. AHN3, J. K. PARK3, J. C. BAE1 1. Nanomaterials Team, Korea Institute of Industrial Technology, Techno... and 10-50 mm, respectively, were blended to make Ti-12%Mg mixture. The blended powders were mechanically alloyed in a cylindrical hardened steel vial of 100 mm in diameter and 150 mm in length......
Convective heat and mass transfer in MHD mixed convection flow of Jeffrey nanofluid over a radially stretching surface with thermal radiationM. Bilal Ashraf1, T. Hayat2, 3, A. Alsaedi3, S..., Comsats Institute of Information Technology, Sahiwal, Pakistan)Abstract:Mixed convection flow of magnetohydrodynamic (MHD) Jeffrey nanofluid over a radially stretching surface with radiative surface......
Abrasion Behaviour of Boronized Layer曲敬信,武晓丽,邵荷生摘 要:<正> 1.IntroductionBoronizing can evidently increase thesurface hardness and wear resistance of me-tallic materials[1].It is simple in technique,not expensive and widely used on tools,diesand some other parts which are easy towear.However the wear mechanism andbehaviour of boronized layer......